Achterberg, Eric Pieter; Kopte, Robert; Galley, Christopher G (2022): ADCP current measurements (38 kHz) during RV SONNE cruise SO289 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.946261
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Upper-ocean velocities along the cruise track of RV SONNE cruise SO289 were continuously collected by a vessel-mounted Teledyne RD Instruments 38 kHz Ocean Surveyor ADCP. The transducer was located at 6.0 m below the water line. The instrument was operated in narrowband mode with 32 m bins and a blanking distance of 16.0 m, while 50 bins were recorded using a pulse of 2.87 s. The ship's velocity was calculated from position fixes obtained by the Global Positioning System (GPS). Heading, pitch and roll data from the ship's gyro platforms and the navigation data were used by the data acquisition software VmDas internally to convert ADCP velocities into earth coordinates. Accuracy of the ADCP velocities mainly depends on the quality of the position fixes and the ship's heading data. Further errors stem from a misalignment of the transducer with the ship's centerline. Data post-processing included water track calibration of the misalignment angle (-0.25° +/- 0.3777°) and scale factor (1.0004 +/- 0.0076) of the Ocean Surveyor signal. The average interval was set to 120 s.
Other version:
nc file: ADCP current measurements (38 kHz) during RV SO289 [dataset]. so_289_vmadcp_38khz_01.nc
Data processing report:
Kopte, Robert (2022): Upper-ocean acoustic Doppler current profiler (38kHz-ADCP) underway measurements during Sonne cruise SO_289 - Data Processing Report. Institute of Geosciences, Kiel University, so_289_vmadcp_38khz_01_proc_report.pdf
Standard operating procedure:
Kopte, Robert; Betz, Maximilian; Anselm, Norbert (2022): SOP 38kHz ADCP aboard of RV Sonne (vessel:sonne:adcp_38khz_650074). Zenodo, https://doi.org/10.5281/zenodo.7525399
Project(s):
DAM Underway Research Data (DAM_Underway)
Coverage:
Median Latitude: -30.069506 * Median Longitude: -126.279361 * South-bound Latitude: -36.375900 * West-bound Longitude: 17.999500 * North-bound Latitude: -25.716600 * East-bound Longitude: -71.729100
Date/Time Start: 2022-02-17T19:12:00 * Date/Time End: 2022-04-03T21:08:00
Minimum DEPTH, water: 54.0 m * Maximum DEPTH, water: 1622.0 m
Event(s):
SO289_0_Underway-1 * Latitude: -33.607570 * Longitude: -71.729050 * Date/Time: 2022-02-23T16:30:00 * Elevation: -109.0 m * Location: South Pacific Ocean * Campaign: SO289 (GEOTRACES GP21) * Basis: Sonne_2 * Method/Device: Acoustic Doppler Current Profiler (ADCP)
SO289_0_Underway-4 (event was not logged in DSHIP) * Latitude Start: -32.977300 * Longitude Start: -71.731300 * Latitude End: -25.833200 * Longitude End: 171.999300 * Date/Time Start: 2022-02-17T19:12:00 * Date/Time End: 2022-04-03T21:08:00 * O2A Registry URI: https://hdl.handle.net/10013/sensor.f157f995-f782-4567-b60f-42da5cac7e0e * Campaign: SO289 (GEOTRACES GP21) * Basis: Sonne_2 * Method/Device: Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38)
Comment:
Velocity quality flagging is based on following threshold criteria: abs(UC) or abs(VC) > 1.5 m/s, rms(UC_z) or rms(VC_z) > 0.3.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Kopte, Robert | Geocode | ||
| 2 | LATITUDE | Latitude | Kopte, Robert | Geocode | ||
| 3 | LONGITUDE | Longitude | Kopte, Robert | Geocode | ||
| 4 | DEPTH, water | Depth water | m | Kopte, Robert | Geocode | |
| 5 | Current velocity, east-west | Cur vel U | cm/s | Kopte, Robert | Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38) | |
| 6 | Current velocity, north-south | Cur vel V | cm/s | Kopte, Robert | Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38) | |
| 7 | Quality flag, current velocity | QF cur vel | Kopte, Robert | Calculated | UV QC flag meanings= 0:unknown, 1:good_data, 2:probably_good_data, 3:potentially_correctable_bad_data, 4:bad_data, 5:not_used, 6:not_used, 7:nominal_value, 8:interpolated_value, 9:missing_value | |
| 8 | Echo intensity, relative | Echo int rel | cts | Kopte, Robert | Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38) | |
| 9 | Pings, averaged to a double ensemble value | Pings per ens | # | Kopte, Robert | Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
5473825 data points
Download Data
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